Phosphoric acid
CAS Number 7664-38-2
Chemical Formula H3O4P
Synonyms
White phosphoric acid
Phosphoric acid hydrogen
85 WT% solution in water
Appearance Colorless liquid
HS Code 2809 20 00
MOQ Minimum Order Quantity 1 FCL Full Container Load
Products Description of Phosphoric acid CAS#7664-38-2
Phosphoric acid is an inorganic oxygen-containing acid featuring a central phosphorus atom covalently bonded to one oxo group and three hydroxyl groups. It serves widely as a solvent, human and algal metabolite, and key fertilizer component. It functions as the conjugate acid for both dihydrogenphosphate and phosphate ions.
Parameters
| Parameter | Value |
| Melting point | ~40 °C(lit.) |
| Boiling point | 158 °C(lit.) |
| density | 1.685 g/mL at 25 °C(lit.) |
| vapor density | 3.4 (vs air) |
| vapor pressure | 2.2 mm Hg ( 20 °C) |
| refractive index | n 20/D 1.433 |
| FEMA | 2900 | PHOSPHORIC ACID |
| storage temp. | no restrictions. |
| solubility | H2O: soluble |
| pka | 2.1-7.2-12.3(at 25℃) |
| form | Solid or Viscous Liquid |
| Specific Gravity | 1.7 |
| color | ≤10(APHA) |
| PH | 3.06(1 mM solution);2.26(10 mM solution);1.63(100 mM solution); |
| Odor | Odorless |
| PH Range | 1.5 |
| biological source | synthetic |
| Water Solubility | MISCIBLE |
| λmax | λ: 260 nm Amax: ≤0.05 λ: 280 nm Amax: ≤0.04 |
| Merck | 14,7344 |
| BRN | 1921286 |
| Exposure limits | TLV-TWA 1 mg/m3 (ACGIH, MSHA, and OSHA); TLV-STEL 3 mg/m3 (ACGIH). |
| Dielectric constant | 61.0 |
| InChIKey | NBIIXXVUZAFLBC-UHFFFAOYSA-N |
| LogP | -2.15 |
| CAS DataBase Reference | 7664-38-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Phosphoric acid(7664-38-2) |
| EPA Substance Registry System | Phosphoric acid (7664-38-2) |
Safety Information
| Item | Details |
| Hazard Codes | C,Xn,T,F |
| Risk Statements | 34-35-22-39/23/24/25-36/38-23/24/25-11 |
| Safety Statements | 7-16-26-36/37-45-36/37/39-1/2-24/25 |
| RIDADR | UN 3453 8/PG 3 |
| OEB | C |
| OEL | TWA: 1 mg/m3, STEL: 3 mg/m3 |
| WGK Germany | 3 |
| RTECS | TB6300000 |
| F | 3-10 |
| TSCA | Yes |
| HS Code | 2809 20 00 |
| HazardClass | 8 |
| PackingGroup | III |
| Hazardous Substances Data | 7664-38-2(Hazardous Substances Data) |
| Toxicity | ADI 0 to 70 mg / kg (total phosphate content in terms of phosphorus, FAO / WHO, 2001). GRAS (FDA, § 182.1073, 2000). LD50 1530mg / kg (rat, oral). Intake of 2–4 g daily may cause mild diarrhea. Usual level in cola drinks: 0.02%–0.06%. |
| IDLA | 1,000 mg/m3 |
Product Application of Phosphoric acid CAS#7664-38-2
Phosphoric acid is an inorganic acidulant manufactured by burning phosphorus in excess air to form phosphorus pentoxide, which is then hydrated to produce orthophosphoric acid at various concentrations. It is a strong acid fully soluble in water, and its salts are known as phosphates. It adds tartness and acidity to cola and root beer beverages, acts as a synergistic antioxidant in vegetable shortenings, helps maintain proper pH and supply phosphorus in yeast production, and serves as an acidulant in cheese production. It is commonly referred to as orthophosphoric acid.
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